Heaving plug



Aug. 13, 1929. REEVES 1,724,415

HEAVING PLUG Filed June 26, 19 28 Patented Aug. 13, 1929.

' ire iEZtAlE HEAVING PLUG.

Application filed June 26,

This invention relates to heaving plugs and it is an object of theinvention to provide a device of this kind which, when applied within awell casing, fits snugly there in and thereby effectively serves to keepwater, cement, sediment or other foreign matter from passing by theapplied plug up into the casing.

Another object of the invention is to provide a device of this kindprovided at its upper portion with an outstanding washer or gasketadapted to have close contact with the casing when the plug is inapplied position and also wherein the lower portion of the plug isadapted to have a plate attached thereto operating for the same purposeas the washer.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved heavingplug whereby certain important advantages are attained and the devicerendered simpler, less expensive and otherwise more convenient andadvantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanying drawing,wherein Figure 1 is a view partly in section and partly in elevation ofa heaving plug constructed in accordance with an embodiment of myinvention;

Figure 2 is a stantially on the sectional view taken subline 22 ofFigure 1;

Figure 3 is a fragmentary view of the bottom disc illustrating one ofthe bayonet slots in the marginal flange of said disc.

As disclosed in the accompanying drawing, 1 denotes a hollow cylindricalbody or shell having its upper end 2 closed with the opposite or lowerend of the bore of the body or shell open. At diametrically opposedpoints the body or shell 1 is provided with the longitudinally directedslots 3 through which are directed the outer end portions of theclamping arms or dogs 4. The inner end portions of these arms or dogs 4are pivotally connected with a rod 5 disposed transversely through thebody or shell 1 and supported thereby. These arms or dogs 4 areconstantly urged 1928. Serial No. 288,469.

toward the horizontal by an expansible member 6, preferably a coilspring, interposed bet-ween the closed end 2 of the body or shell 1 andthe inneror pivoted end portlons of the dogs or arms 4:.

The closed end 2 is provided with a reduced extension 7 upon which isadapted to be threaded a cap 8 and which cap serves to clamp to the face9 surrounding the eX- tenslon 7 a washer or gasket 10. This washer orgasket 10 projects beyond the periphery of the body or shell 1 for closecontact with the wall of the easing into which the plug is applied toprovide an effective medium to keep water, cement, sediment or otherforeign matter from passing by the plug up into the casing.

Disposed over the lower or open end of the body or shell 1 is a disc 11having its marginal portion defined by a flange 12 substantially atright angles to the disc 11 and which flange has close'contact with thepe-- riphery of the body or shell 1 adjacent to its lower or open end.The inner wall of the flange 12 is provided with the bayonet slots 14into which are adapted to be en- 1 gaged the outstanding pins or lugs 15carried by the lower portion of the body or shell 1 whereby the disc 11may be effectively held in applied or working position with respect tothe body or shell 1 yet be readily and conveniently applied or removed.The flange 12 of the disc 11 is also adapted to have close contact withthe wall of the casing into which the plug is applied to prevent passageof matter around the plug up into the casing while the disc 11 closesthe lower open end of the body or shell 1 and prevent any matterentering such body or shell.

The outer ends of the arms or dogs 4 are provided with the beveled teeth16 which are adapted to have biting action upon the inner wall of thewell casing so that when in applied position the device is effectivelyheld against upward movement within the casing, said beveled teethoffering no hindrance or obstruction to the device when being loweredwithin the casing.

From the foregoing description it is thought to be obvious that aheaving plug constructed in accordance with my invention is particularlywell adapted for use by reason of the convenience and facility withwhich it may be assembled and operated, and it will also be obvious thatmy invention is susceptible of some change and modification Withoutdeparting from the principles and spirit thereof and for this reason Ido not wish to be understood as limiting myself to the precisearrangement and formation of the several parts herein shown in carryingout my invention in practice except as hereinafter claimed.

I claim A heaving plug comprising a body having a tubular portion openat an end, the wall of said tubular portion being provid ed atsubstantially diametrically opposed points With openings, securing meansmounted Within the body and extending outwardly through the openings, adisc disposed over the open end of the body and provided with a flangesurrounding the adjacent end portion of the body, means for holding thedisc and flange in applied position, and a Washer carried by theopposite end portion of the body and projecting beyond the peripherythereof.

In testimony whereof I hereunto afiix my signature.

CARLOS J. REEVES.

